CN202385393U - Printed circuit board (PCB) with precise half holes - Google Patents
Printed circuit board (PCB) with precise half holes Download PDFInfo
- Publication number
- CN202385393U CN202385393U CN201120556491XU CN201120556491U CN202385393U CN 202385393 U CN202385393 U CN 202385393U CN 201120556491X U CN201120556491X U CN 201120556491XU CN 201120556491 U CN201120556491 U CN 201120556491U CN 202385393 U CN202385393 U CN 202385393U
- Authority
- CN
- China
- Prior art keywords
- pcb
- circuit board
- printed circuit
- hole
- half holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
Abstract
The utility model relates to a technology for manufacturing a printed circuit board (PCB) and particularly relates to a PCB with precise half holes. The PCB is characterized in that the edge of the PCB is provided with a plurality of half holes, and tin layers are arranged on the edges of all half holes. According to the PCB, after the half holes are made, copper layers are protected after tin is sprayed; and through using tin layers as protective layers, the binding capacity of the copper layers is enhanced, the tearing resistance is enhanced, and the falling of the copper layers on hole walls can be completely avoided, so that the generation of impurities during the process of producing the PCB is reduced, the cleaning workload is also reduced, and the quality of a finished product of the PCB is further improved.
Description
Technical field
The utility model relates to the printed circuit board (pcb) manufacturing technology, the printed circuit board in particularly a kind of precision half hole.
Background technology
Printed circuit board is a kind of important electron parts, is the supporter of electronic devices and components, is the supplier that electronic devices and components are electrically connected.Wherein, the characteristics in conventional B half hole are: lines are fine and closely woven, and a part of B half hole is used to make things convenient for plug connector elements; In the middle of PCB, as shown in Figure 1, dwindle the element area occupied; Also some B half hole is used for integrated IC components and parts and assembly printed board in addition; Formation is electrically connected, and plate face IC lead and IC components and parts form and are electrically connected, and half hole of edges of boards links to each other with other assembly PCB.
The manufacturing process flow of ordinary printed circuit board is following:
1. the completion of preceding processing: like boring, plated-through-hole, graphic making and electroplate that figure, etching, figure are anti-welding, the printing of literal;
2. the completion of secondary drilling hole milling, promptly half hole is made and is accomplished.
3. carry out profile, detection, warehouse-in operation at last.
Wherein in step 2, when carrying out half hole manufacturing process, itself hole wall has the copper layer, and is the complete copper layer of whole hole wall in flakes, and purpose is to be processed into half hole that meets the matching requirements size.When brill milled, the equipment drill bit ran up and moves, and can produce a kind of strength of pullling therebetween, made hole wall and copper layer adhesion loosening, was very easy to make that copper sheet drops.Simultaneously, copper sheet drops and on printed circuit board, then can form copper scale, and easy-clear is not still removed the quality that totally then influences finished product certainly.
The utility model content
The utility model provides the printed circuit board in a kind of precision half hole in order to solve the problems of the technologies described above, and possesses half accurate pore structure, has solved anti-tear problem of drawing, and anti-tear the drawing property of this kind half pore structure is stronger, stops the problem appearance that hole wall copper pull-up falls.
The technical scheme of the utility model is following:
The printed circuit board in a kind of precision half hole is characterized in that: the edge of said printed circuit board is provided with some half holes, and the limit, hole in half hole is provided with the tin layer.
The limit, two-sided hole in said half hole is provided with the tin layer.
The technique effect of the utility model is following:
Printed circuit board carries out gong half hole before the etching after plating, make the limit, hole be provided with the tin layer through spray tin; Through the tin layer as protective layer; Strengthened anti-tear drawing property, the copper pull-up that can stop hole wall fully falls, and has therefore stopped printed circuit board impurity in process of production and has produced; Also reduce the workload of removing, thereby improved the end product quality of printed circuit board.
Description of drawings
Fig. 1 is the structural representation of traditional PCB
Fig. 2 is the structural representation of the utility model
Fig. 3 is the cross section structure sketch map of the utility model.
Embodiment
Shown in Fig. 2-3, the limit, hole that the printed circuit board in a kind of precision half hole, the edge of said printed circuit board are provided with 1, half hole 1, some half holes is provided with tin layer 2.
The limit, two-sided hole in said half hole 1 is provided with tin layer 2.
Claims (2)
1. the printed circuit board in precision half hole, it is characterized in that: the edge of said printed circuit board is provided with some half holes (1), and the limit, hole of half hole (1) is provided with tin layer (2).
2. the printed circuit board in a kind of precision according to claim 1 half hole is characterized in that: the limit, two-sided hole in said half hole (1) is provided with tin layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120556491XU CN202385393U (en) | 2011-12-28 | 2011-12-28 | Printed circuit board (PCB) with precise half holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120556491XU CN202385393U (en) | 2011-12-28 | 2011-12-28 | Printed circuit board (PCB) with precise half holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202385393U true CN202385393U (en) | 2012-08-15 |
Family
ID=46633858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120556491XU Expired - Fee Related CN202385393U (en) | 2011-12-28 | 2011-12-28 | Printed circuit board (PCB) with precise half holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202385393U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108966488A (en) * | 2018-09-26 | 2018-12-07 | 四川锐宏电子科技有限公司 | A kind of half bore microflute circuit board and its process equipment and processing technology |
| CN109600907A (en) * | 2017-09-30 | 2019-04-09 | 惠州威健电路板实业有限公司 | Explosion-proof spray sheet tin and preparation method thereof |
-
2011
- 2011-12-28 CN CN201120556491XU patent/CN202385393U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600907A (en) * | 2017-09-30 | 2019-04-09 | 惠州威健电路板实业有限公司 | Explosion-proof spray sheet tin and preparation method thereof |
| CN108966488A (en) * | 2018-09-26 | 2018-12-07 | 四川锐宏电子科技有限公司 | A kind of half bore microflute circuit board and its process equipment and processing technology |
| CN108966488B (en) * | 2018-09-26 | 2024-04-16 | 四川锐宏电子科技有限公司 | Half-hole micro-groove circuit board and processing equipment and processing technology thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20151228 |
|
| EXPY | Termination of patent right or utility model |